Question

Find the slope and inclination of the line passing through (-5,7) and (7,-5).

Answer 1

Slope of line PQ = `("y"_2 - "y"_1)/("x"_2 - "x"_1)`

                           = `(-5 -7)/(7 + 5) = -1`

Also, slope of line AB = tan θ

tan θ = -1

tan θ = tan (90° + 45°)

      θ = 135°

Inclination = 135°